package com.lf.sp.util;


import java.util.Date;

import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;



public class DateTimeUtil {

	//joda-time
	
	//str->Date
	//Date->str
	public static final String STANDARD_FORMAT = "yyyy-MM-dd HH:mm:ss";
	
	public static Date strToDate(String dateTimeStr,String formatStr){
		DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern(formatStr);
		DateTime dateTime = dateTimeFormatter.parseDateTime(dateTimeStr);
		return dateTime.toDate();
	}
	public static Date strToDate(String dateTimeStr){
		DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern(STANDARD_FORMAT);
		DateTime dateTime = dateTimeFormatter.parseDateTime(dateTimeStr);
		return dateTime.toDate();
	}
	
	public static String DateToStr(Date date,String formatStr){
		if(date == null){
			return StringUtils.EMPTY;
		}
		DateTime dateTime = new DateTime(date);
		return dateTime.toString(formatStr);
	}
	
	public static String DateToStr(Date date){
		if(date == null){
			return StringUtils.EMPTY;
		}
		DateTime dateTime = new DateTime(date);
		return dateTime.toString(STANDARD_FORMAT);
	}
	
	
}
